As AI tools get better at producing a first draft, a working piece of code, or a plausible answer, the value of producing those things at all quietly declines. What becomes more valuable is something less visible: the ability to tell whether what was produced is actually correct, appropriate, and worth using.
Generation is getting cheap; evaluation is not
A model can produce a plausible-sounding paragraph, function, or analysis in seconds. Whether that output is actually right, in a specific context, still requires someone who understands the subject well enough to spot the subtle error, the missing edge case, or the confident-sounding claim that does not quite hold up. That evaluative skill was always valuable. It is becoming the bottleneck, now that production is no longer one.

People with strong foundational knowledge in a field are positioned to use AI tools as genuine accelerators, since they can quickly spot when something is off and correct it.
This creates an uncomfortable dependency: evaluating AI output well requires roughly the same depth of understanding it would take to produce the output without help in the first place. Someone who never built that underlying understanding has no real way to catch a plausible-sounding mistake, because the mistake is specifically designed, by nature of how these tools work, to sound reasonable.